Improvement in molds for castingiwagon-boxes



` jaw) in which the gate h is made.

UNrrnn STATES ArnNr OFFICE..

JAMES MOLLINEAUX, OF NORTHAMPTN, PENNSYLVANIA.

IMPROVEMENT IN MOLDS FOR CASTING'WAGON-BOXES.

Specification forming part of Letters Patent No. :1,l69, dated July 12, 1843.

To @ZZ whom, it may concern:

Be it known that l, JAMns M'oLLINnAUX, of Northampton, in the county of Lehigh and State of Pennsylvania, have invented a new and useful Improvement in Casting Boxes for Carriage-Wheels 5 and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure l is a top plan; Fig. 2, a vertical section 5 Fig. 3, a'perspective of core and upper and lower plate with jaws removed; Fig. 4, a top plan of jaws.

The mold in which I cast the boxes is constructed as follows An oblong plate or lower plate, a, is formed with a hole, c, through it 'at its center, around which a rim, b, projects up, the top of which is wide enough to receive the jaws d, which iit over it, and also to form the edge of the box to be cast. Around the inner edge of this rim there is a bead raised, and its under part is cut out at c', (see Fig. 2,) so as to make it thin at that point d, a pair of jaws, the inside of each of which is rabbeted at its lower edge, so as to fit onto the rim b, (see e, Fig. 2.) The rest of the jaws, up to another rabbet around their upper edge, form on their inner surface, when closed, a hollow truncated cone of the height of the box required, and intersected vertically with three triangular grooves, g, at equal distances from each other, to forni the ears on the boX. VIn the rabbet j above, a number of holes are drilled downward, to render the metal of lthe side of the mold less solid at that point, and on one side there is a projection (half on each This projection rises up a little beyond the top of the jaws, as shown at k, Fig. 2, where the metal is poured in.V The opening of this gate or opening into the mold is a narrow vertical slit, h, running from top to bottom, so that when the casting cools the effect of the contraction shall be equal, which is necessary to form a perfect casting.

e represents the steady-pins in the side of the jaws. (See Fig. 4.) The jaws are closed and held together by wrought-iron levers, which are jointed together at one end, o, and bend round on each side of the jaws, which they are attached to at n by bolts. They then project beyond the jaws, gradually curving in is bolted upright to the lower plate, ct.

vform of the inside ofthe box to be cast.

toward each other and forming handles Z. When the jaws are closed, these handles are connected by a ring, m, passing over both.

Over the jaws before described there is a horizontal bar, p, passingY over the center of the cone in the jaws. One end of this bar is jointed to the upper end of astandard, q,which The other end of the bar is bent down at right angles to the same plate on the other side of the jaws, where it is again bent at right angles, the end being horizontal. At the point ofthe lastnamed angle a slot is cut inthe bar, through which a staple, s, attached to plate a, passes. rllhis staple receives a key, t, which secures the bar down to its place.

Directly over the jaws there is a horizontal cross-piece, u, which is Xed to the bar p, and at right angles to it. Through a hole in each end of the crossepina rods o pass. These are connected with a ring, x, below, which I denominate the top plate. On the upper ends of the rods a screw is cut, on each of which two nuts are fitted, one above and the other below the cross-piece u, by which the length of the rods between the cross-piece and top plate is regulated, so that when the bar p is brought down to its place the top plate will bear on the rabbet j in the upper edge of the jaws and hold them down tight.

Through the center of the ring or upper plate, a', a core or mandrel, y, is put, the shape of whichis tapering, corresponding with the Both ends of this core are turned out, so as to leave very little metal at that pointe', which prevents the boX from being so much chilled there, as it would otherwise be, which, together with the gradual thinning of all sides of the mold to ward the end, produces a more regular chill throughout the box.

Through the center of the core y a rod, w, passes, having a washer, z, on its lower end. On the part of this rod which projects above the core a screw is cut, which screws into a nut cut in the cross-bar p above, the upper end of the rod being bent into a crank. By means of this rodthe core can be raised or lowered at pleasure.

When the mold is broughtinto use, the jaws are closed together-and fastened by the ring m. The bar p is also fastened down by the staple is then opened and the box taken out,` after which the parts are returned to their places, and the same operation is again performed, by which means boxes of the most perfect description are made.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of the jaws d and top and bottom plates', a and x, with the Inovable core constructed and arranged in the manner and for the purpose substantially as herein described.

2. In combination with the above, the gate h, opening into the side of the mold, with a l long narrow mouth, reaching nearly from top to bottom of the casting, in the manner and for the purpose before specified.

J AMES MOLLINEAUX.l

Witnesses:

JOHN Hmz, 4 J. J GREENOUGH. 

